rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 856 ONLINE 25 EVENTS SEARCH REGISTER  START HERE
 
2 pages [ <<    <    ( 1 )     2     NEXT    >> ]646 viewsPOST REPLY
3D Heli Depot . JR-Spektrum . Gyro Hobbies

.
.
Century Hawk - Falcon - Raven - Predator > A Very Close Call " Revisited"
 
 
Blade_Master1
Key Veteran
Location: Canada

How often do you do a range check ?

Yesterday I had this premonition to do a range check but didn't after all it's a 2.4 ghz system

While flying my nitro, I had just come out of a loop when the engine slowed to an idle 40 feet up. I lost radio signal to my heli
now I'm waiting for the smack I keep trying the sticks nothing.

About 10' from the ground I regain control and recovered

WOW talk about lucky, However I did have to change my shorts

after range testing 2X AR7000 the 1 I was using only had a range of about 300' and test button range of 40'

The older good RX had a range of about 900' it was very hard to see model at this distance it was at least 3 times as far as the other ar7000

both RX had the same test button range of about 40'-50'

IMO this type of range testing in NOT accurate at least not in my Case

JM2C's :)
08-14-2008 01:23 PM
 
 
rotormonkey
Senior Heliman
Location: Ottawa, ON - Canada

Damn Century machines all have short range! We should all stop using Century machines!
08-14-2008 01:35 PM
 
 
cassat
Veteran
Location: Alberta,Canada

Maybe time to put ceramic bearings in the main shaft.
08-14-2008 02:53 PM
 
 
RAK402
Key Veteran
Location: Alhambra, CA

I never range check th little electrics, except right after the first time I install an RX (but I should).

I range check the .50 and above machines at the beginning of each flying session.

I have not decided if I am paranoid or anal retentive (or both), but have done this for over 30 years.
08-14-2008 03:26 PM
 
 
helihell
Senior Heliman
Location: Canada

hehe good one rotormonkey !

I always did a range check when I was on 72mhz,on 2.4 I would say I do it every other time out.
But for the effort it takes we should do it at the start of each day just like we used to. Things still happen, boards and parts fail from vibration alone look at the early 9ch 2.4 DSM RX's.

Thanks for sharing BM I think I just started range checking at the start of each day again. Glad you saved your machine.

DOH!
08-14-2008 03:58 PM
 
 
midwestpilot
Elite Veteran
Location: Crystal Lake, IL

guess i am lucky and very very bad

flying since 83.. .never ever range checked anything ever... no radio issues either.. one lucky dude

In life there is no spacebar!

Rich Erikson AMA 6175
08-14-2008 07:51 PM
HOMEPAGE  
 
 
the Wasp
rrProfessor
Location: Vt

geezz,, my JR's always got good range checks (better than the Futaba's at my field !!), always get 100 ft or more, "PPM or PCM",,

I used PPM for 5 years never a problem, in those 5 years I had 2 or 3 glitches no more, it came down to loose screws, tighten them up and away I go,,

all the time I was flying PPM I was reading all the problems guys were having with PCM lock-out,,

I flew PCM in my Gasser plans,, I switched 1 heli over to PCM last year and the other this year, I hope it's not a mistake..

Jim
Buzz Buzz Buzz
08-14-2008 08:08 PM
 
 
Furious Predator
Elite Veteran
Location: Kitchener, Ontario, Canada

out of curiosity.

what is your power supply setup? are you running a lipo setup? if so, what kind, and where is it all located?

or are you running a 4 cell ni-cad or Nmhd pack?

if your using the lipo setup with something like a duralite, it is possible that it could have over heated if the regulator is not kept in an open space.

if its a nicad or similar setup, not having a fresh charge, or packs capable of pulling the amps, could cause a brown out. the spektrum rx's are picky with having enough volts.

Shawn
Team Leisure-Tech
Cratering the earth one heli at a time
08-14-2008 09:29 PM
HOMEPAGE  
 
 
Blade_Master1
Key Veteran
Location: Canada

I'm not blaming anyone for this, electronics fail

I just got the bum clench from that one

my set up is

4.8 nicad
3 hs5625
401 & 9254
ds821 for throtle

eventualy I'll change to a 6v setup

sending rx to Horizon let them have a go at it
strange that the rx range is so low


.

JM2C's :)
08-15-2008 02:39 AM
 
 
Furious Predator
Elite Veteran
Location: Kitchener, Ontario, Canada

are you sure it is not the battery? did you do the test with a full charge? do you ever cycle it at all?

those nicad's NEED to be cycled to get their full potential, or else you will eventually be lucky to even get a single flight on a charge.

do you have another RX you could test with?

Shawn
Team Leisure-Tech
Cratering the earth one heli at a time
08-15-2008 02:49 AM
HOMEPAGE  
 
 
Blade_Master1
Key Veteran
Location: Canada

wasn't the pack, after the incident I used the same pack for range testing, the second rx had way more range and did it with the same pack charge.
I am pretty sure it was signal loss because the heli went in to failsafe
and the battery monitor I use was way up in the green

no probs with older rx same setup


pretty scary stuff watching your heli fall tail first in failsafe

JM2C's :)
08-15-2008 03:21 AM
 
 
Furious Predator
Elite Veteran
Location: Kitchener, Ontario, Canada

hm...that is pretty strange then.

it would definatly be worth sending in the RX...while your at it. ask them to do the free firmware upgrade to it if you dont already have it

wouldn't be worth the crash to risk a bad RX

Shawn
Team Leisure-Tech
Cratering the earth one heli at a time
08-15-2008 03:34 AM
HOMEPAGE  
 
 
Blade_Master1
Key Veteran
Location: Canada

Revisited

Got another but clencher again today

The same thing happened again


I'm a firm believer of keeping it up high now
60 feet up 80 -90 feet out heli went into failsafe mode
made a recovery less than 10 feet off the ground this time

2 differant rx recievers same glitch 1 of em has a longer range then the other but they both happened at the same distance roughly

less than 200' out my 30 looked small like a 450 at 50'

rx pack had a full charge

could it be the switch ?

This is NOT HOW I want to test my failsafe mode
good thing I cant fly inverted yet

JM2C's :)
08-16-2008 09:16 PM
 
 
the Wasp
rrProfessor
Location: Vt

""I'm a firm believer of keeping it up high now""

is this what people have been suggesting ??

Jim
Buzz Buzz Buzz
08-16-2008 10:49 PM
 
 
erichevy
Veteran
Location: Zevenhoven The Netherlands

Blade_master,
Did you try a different way how you mounted you're reciever on your heli?
Try A different spot for the sattelite too, just trying to eliminate your problem.
Can you place a picture of your set-up?

Eric.
08-16-2008 11:52 PM
 
 
Blade_Master1
Key Veteran
Location: Canada

Wasp
thats what I've been told to do as a newbie keep it 2 mistakes high

I don't think RX location is going to have any effect
have had it setup the same way for a year never a prob till now

I suspect the switch at this point
I will know tomorrow when I test with a direct connection.

if I still get the same glitch with 2 rx packs plugged in direct I will know it is the radio

JM2C's :)
08-17-2008 03:37 AM
 
 
the Wasp
rrProfessor
Location: Vt

""thats what I've been told to do as a newbie keep it 2 mistakes high"" ,,

well yeea for learning new maneuvers ,, I was wondering if they were telling you this so you wont get the glitches ??

Jim
Buzz Buzz Buzz
08-17-2008 04:29 AM
 
 
Furious Predator
Elite Veteran
Location: Kitchener, Ontario, Canada

i dont want to keep getting back to this....but did you try a different battery pack?

the spektrum rx's will brown out and reset if they go below 4.2 volts if im not mistaken. and that really isn't hard to achive if the pack isn't up to snuff.

try doing a load test.

if you have a discharger, pull a steady 1 to 1.5 amps from the pack, and see how long it takes to get down to 4.2 volts.

if you dont have a discharger, turn your heli on, center the collective, and lift your heli by the swash plate. this will load up all 3 servoes and simulate flight conditions. this always seems to draw approximatly 1 amp, which is about right for a 50 size, and your stlye of flying.

just remember. just because your lights are all green when everything is static, doesn't mean it wont drop like a rock when you load it up.

try doing that for a few minutes and see what happens. there isn't much that will stop the spektrum recievers from working.

Shawn
Team Leisure-Tech
Cratering the earth one heli at a time
08-17-2008 06:58 AM
HOMEPAGE  
 
 
Blade_Master1
Key Veteran
Location: Canada

Furious P
good ideas, I am using a fully charged new pack since I got the battery monitor I always check load by lifting heli by the swash

today I will test with 2 rx packs plugged in direct to the rx
if it happens again I can safely suspect the radio.

my radio display does act up once in a while

JM2C's :)
08-17-2008 01:23 PM
 
 
Furious Predator
Elite Veteran
Location: Kitchener, Ontario, Canada

do you ever cycle your packs?

Shawn
Team Leisure-Tech
Cratering the earth one heli at a time
08-17-2008 03:29 PM
HOMEPAGE  
 
 
2 pages [ <<    <    ( 1 )     2     NEXT    >> ]646 viewsPOST REPLY
E-flite . Next D . Fast Lad Performance

.
.
Century Hawk - Falcon - Raven - Predator > A Very Close Call " Revisited"
 PRINT TOPIC Advertisers 

Subscribe to This Topic

Thursday, January 8 - 2:13 am - Copyright © 2000 - 2009 runryder.com | email | link to rr | runryder needs cookie